<template>
	<view class="content">
		<view class="navbar">
			<!-- current -->
			<view class="nav-item" @click="changeType(1)" :class="{current:sort_type==1}">
				综合排序
			</view>
			<view class=" nav-item" @click="changeType(2)" :class="{current:sort_type==2}">
				销量优先
			</view>
			<view class="nav-item" @click="changeType(3)" :class="{current:sort_type==3||sort_type==4}">
				<text>价格</text>
				<view class="p-box">
					<text class="yticon icon-shang" :class="{active:sort_type==3}"></text>
					<text class="yticon icon-shang xia" :class="{active:sort_type==4}"></text>
				</view>
			</view>
		</view>
		<view class="goods-list">
			<view class="goods-item" @click="navTo(`/pages/product/product?goods_id=${item._id}`)" v-for="item in goodList">
				<view class="image-wrapper">
					<image :src="item.img" mode="aspectFill"></image>
				</view>
				<text class="title clamp">{{item.name}}</text>
				<view class="price-box">
					<text class="price">{{item.price}}</text>
					<text>已售 {{item.sales}}</text>
				</view>
			</view>
		</view>
		<lc-loading :status="status"></lc-loading>
	</view>
</template>

<script>
	import {
		goods_list
	} from "@/api/index.js"
	export default {
		data() {
			return {
				cate_id: '',
				goodList: [],
				is_top: 0,
				limit: 10,
				sort_type: 1,
				// finished:false,//标记一下数据是否全部加载完毕
				status:"more", //loading 加载中      finished完成了    more 还有数据
			}
		},
		onLoad: function(option) { //option为object类型，会序列化上个页面传递的参数
			// console.log(option.id); //打印出上个页面传递的参数。
			this.cate_id = option.id
			// console.log(option.istop); //打印出上个页面传递的参数。
			this.is_top = option.istop || null
			// this.cate_id = option.id
			// console.log(this.cate_id)
			this.GetGoods_list()
		},
		onReachBottom() {
			if(this.status==='finished') return
			
			this.GetGoods_list()
		},
		onPullDownRefresh() {
			this.goodList = []
			this.GetGoods_list()
		},
		methods: {
			GetGoods_list() {
				this.status="loading" //获取数据之前是加载中状态
				let {
					cate_id,
					limit,
					sort_type,
					is_top,
				} = this
				let skip = this.goodList.length
				goods_list({
					cate_id,
					is_top,
					skip,
					limit,
					sort_type
				}).then(res => {
					// console.log(res)
					// this.goodList=res.data
					// this.goodList = this.goodList.concat(res.data) // 追加新数据
					if(res.code==1){
						uni.stopPullDownRefresh();
						this.goodList.push(...res.data) //不能追加数组 需要展开
						let len = this.goodList.length
						this.status = len>=res.count?'finished':'more'
					}
					// this.finished = len>=res.count  //判断加载条数与总数据条数
					
					// if(len>=res.count){
					// 	this.status="finished" //没有更多数据了
					// }else{
					// 	this.status="more"
					// }
					
				})
			},
			changeType(type){
				if(type==3){
					if(this.sort_type==4){
						this.sort_type=3
					}else{
						this.sort_type=4
					}
				}else{
					this.sort_type=type
				}
				this.goodList.length=0
				this.status="more"
				this.GetGoods_list()
			}
		}
	}
</script>

<style scoped lang="scss">
	.looding {
		text-align: center;
	}

	page,
	.content {
		background: $page-color-base;
	}

	.content {
		padding-top: 96upx;
	}

	.navbar {
		position: fixed;
		left: 0;
		top: var(--window-top);
		display: flex;
		width: 100%;
		height: 80upx;
		background: #fff;
		box-shadow: 0 2upx 10upx rgba(0, 0, 0, .06);
		z-index: 10;

		.nav-item {
			flex: 1;
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			font-size: 30upx;
			color: $font-color-dark;
			position: relative;

			&.current {
				color: $base-color;

				&:after {
					content: '';
					position: absolute;
					left: 50%;
					bottom: 0;
					transform: translateX(-50%);
					width: 120upx;
					height: 0;
					border-bottom: 4upx solid $base-color;
				}
			}
		}

		.p-box {
			display: flex;
			flex-direction: column;

			.yticon {
				display: flex;
				align-items: center;
				justify-content: center;
				width: 30upx;
				height: 14upx;
				line-height: 1;
				margin-left: 4upx;
				font-size: 26upx;
				color: #888;

				&.active {
					color: $base-color;
				}
			}

			.xia {
				transform: scaleY(-1);
			}
		}

		.cate-item {
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			width: 80upx;
			position: relative;
			font-size: 44upx;

			&:after {
				content: '';
				position: absolute;
				left: 0;
				top: 50%;
				transform: translateY(-50%);
				border-left: 1px solid #ddd;
				width: 0;
				height: 36upx;
			}
		}
	}

	/* 分类 */
	.cate-mask {
		position: fixed;
		left: 0;
		top: var(--window-top);
		bottom: 0;
		width: 100%;
		background: rgba(0, 0, 0, 0);
		z-index: 95;
		transition: .3s;

		.cate-content {
			width: 630upx;
			height: 100%;
			background: #fff;
			float: right;
			transform: translateX(100%);
			transition: .3s;
		}

		&.none {
			display: none;
		}

		&.show {
			background: rgba(0, 0, 0, .4);

			.cate-content {
				transform: translateX(0);
			}
		}
	}

	.cate-list {
		display: flex;
		flex-direction: column;
		height: 100%;

		.cate-item {
			display: flex;
			align-items: center;
			height: 90upx;
			padding-left: 30upx;
			font-size: 28upx;
			color: #555;
			position: relative;
		}

		.two {
			height: 64upx;
			color: #303133;
			font-size: 30upx;
			background: #f8f8f8;
		}

		.active {
			color: $base-color;
		}
	}

	/* 商品列表 */
	.goods-list {
		display: flex;
		flex-wrap: wrap;
		padding: 0 30upx;
		background: #fff;

		.goods-item {
			display: flex;
			flex-direction: column;
			width: 48%;
			padding-bottom: 40upx;

			&:nth-child(2n+1) {
				margin-right: 4%;
			}
		}

		.image-wrapper {
			width: 100%;
			height: 330upx;
			border-radius: 3px;
			overflow: hidden;

			image {
				width: 100%;
				height: 100%;
				opacity: 1;
			}
		}

		.title {
			font-size: $font-lg;
			color: $font-color-dark;
			line-height: 80upx;
		}

		.price-box {
			display: flex;
			align-items: center;
			justify-content: space-between;
			padding-right: 10upx;
			font-size: 24upx;
			color: $font-color-light;
		}

		.price {
			font-size: $font-lg;
			color: $uni-color-primary;
			line-height: 1;

			&:before {
				content: '￥';
				font-size: 26upx;
			}
		}
	}
</style>
